405248 has 18 divisors (see below), whose sum is σ = 809424. Its totient is φ = 202496.

The previous prime is 405247. The next prime is 405253. The reversal of 405248 is 842504.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 405248.

It is not an unprimeable number, because it can be changed into a prime (405241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536 + ... + 1047.

It is an arithmetic number, because the mean of its divisors is an integer number (44968).

2⁴⁰⁵²⁴⁸ is an apocalyptic number.

It is an amenable number.

405248 is a deficient number, since it is larger than the sum of its proper divisors (404176).

405248 is an equidigital number, since it uses as much as digits as its factorization.

405248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 405248 is about 636.5909204505. The cubic root of 405248 is about 74.0014608915.

The spelling of 405248 in words is "four hundred five thousand, two hundred forty-eight".